diff --git a/Gemfile b/Gemfile
index 56ef68a..10d901e 100644
--- a/Gemfile
+++ b/Gemfile
@@ -2,7 +2,11 @@ source :rubygems
 
 gemspec :name => "therubyrhino"
 
-# NOTE: some specs might be excluded @see #spec/spec_helper.rb
-gem 'redjs', :git => 'git://github.com/cowboyd/redjs.git', :group => :test,
-             :ref => "0d844f066666f967a78b20beb164c52d9ac3f5ca"
-#gem 'redjs', :path => '../redjs', :group => :test
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+group :test do
+  # NOTE: some specs might be excluded @see #spec/spec_helper.rb
+  gem 'redjs', :git => 'git://github.com/cowboyd/redjs.git', :group => :test,
+               :ref => "0d844f066666f967a78b20beb164c52d9ac3f5ca"
+  #gem 'redjs', :path => '../redjs', :group => :test
+  
+  gem 'therubyrhino_jar', '1.7.4'
+end
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diff --git a/spec/rhino/integration/bar.js b/spec/rhino/integration/bar.js
new file mode 100644
index 0000000..af8513b
--- /dev/null
+++ b/spec/rhino/integration/bar.js
@@ -0,0 +1,11 @@
+//console.log('bar.js 1');
+var util = require('util');
+//console.log('bar.js 2');
+var Bar = {};
+Bar.puts = function (message) {
+    util.puts(message);
+    return message;
+};
+//console.log('bar.js 3');
+exports.Bar = Bar;
+//console.log('bar.js 4');
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diff --git a/spec/rhino/integration/foo.js b/spec/rhino/integration/foo.js
new file mode 100644
index 0000000..8934644
--- /dev/null
+++ b/spec/rhino/integration/foo.js
@@ -0,0 +1,7 @@
+//console.log('foo.js 1');
+var Bar = require('./bar').Bar;
+//console.log('foo.js 2 ' + Bar + " : " + Bar.puts);
+Bar.puts('Hello Bar!');
+//console.log('foo.js 3');
+exports.foo = { 'Bar': Bar };
+//console.log('foo.js 4');
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diff --git a/spec/rhino/integration_spec.rb b/spec/rhino/integration_spec.rb
new file mode 100644
index 0000000..5853bec
--- /dev/null
+++ b/spec/rhino/integration_spec.rb
@@ -0,0 +1,127 @@
+require 'bundler/setup'
+
+require 'rhino'
+require 'pathname'
+require 'stringio'
+
+describe 'integration' do
+  
+  it "requires (CommonJS)" do
+    context = Rhino::Context.new
+    #context.optimization_level = -1
+    context['console'] = Console
+    path = Pathname(__FILE__).dirname.join('integration')
+    environment = Env.new(context, :path => path.to_s)
+    environment.native 'util', Util.new(out = StringIO.new)
+    exports = environment.require 'foo'
+    out.string.should == "Hello Bar!\n"
+    
+    exports.should_not be nil
+    exports.foo.should respond_to(:'[]')
+    exports.foo['Bar'].should respond_to(:'[]')
+    exports.foo['Bar'][:puts].should be_a Rhino::JS::Function
+  end
+  
+  class Env # a CommonJS like environment (inspired by commonjs.rb)
+  
+    def initialize(context, options = {})
+      @context = context
+      @paths = [ options[:path] ].flatten.map { |path| Pathname(path) }
+      @modules = {}
+    end
+    
+    def require(module_id)
+      unless mod = @modules[module_id]
+        filepath = find(module_id) or fail LoadError, "no such module '#{module_id}'"
+        js = "( function(module, require, exports) {\n#{File.read(filepath)}\n} )"
+        load = @context.eval(js, filepath.expand_path.to_s)
+        @modules[module_id] = mod = Module.new(module_id, self)
+        load.call(mod, mod.require_function, mod.exports)
+      end
+      return mod.exports
+    end
+    
+    def native(module_id, impl)
+      @modules[module_id] = Module::Native.new(impl)
+    end
+    
+    def new_object
+      @context['Object'].new
+    end
+
+    private
+
+    def find(module_id)
+      if loadpath = @paths.find { |path| path.join("#{module_id}.js").exist? }
+        loadpath.join("#{module_id}.js")
+      end
+    end
+    
+    class Module
+
+      attr_reader :exports
+
+      def initialize(id, env)
+        @id = id
+        @env = env
+        @exports = env.new_object
+        @segments = id.split('/')
+      end
+
+      def require_function
+        @require_function ||= lambda do |*args|
+          this, module_id = *args
+          module_id ||= this #backwards compatibility with TRR < 0.10
+          @env.require(expand(module_id))
+        end
+      end
+
+      private
+
+      def expand(module_id)
+        return module_id unless module_id =~ /(\.|\..)/
+        module_id.split('/').inject(@segments[0..-2]) do |path, element|
+          path.tap do
+            if element == '.'
+              #do nothing
+            elsif element == '..'
+              path.pop
+            else
+              path.push element
+            end
+          end
+        end.join('/')
+      end
+      
+      class Native
+        
+        def initialize(impl); @impl = impl; end
+        def exports; @impl; end
+        
+      end
+      
+    end
+
+  end
+  
+  class Util
+    
+    def initialize(io = STDOUT)
+      @io = io
+    end
+    
+    def puts(*args)
+      args.each { |arg| @io.puts(arg) }
+    end
+    
+  end
+  
+  class Console
+    
+    def self.log(*msgs)
+      puts msgs.join(', ')
+    end
+    
+  end
+  
+end
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